Quote:
Originally Posted by raustinss
Think we might be putting too much on this "track" use thing ....how many cars for how many yrs have lived with wet sump on a track , yes a scraper,windage tray ,larger pan etc will help but, it's not like this engine will cavitate from SOME track use . Not to mention even still the first few yrs of the ls7's love to grenade themselves do to the oiling system design .
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Well considering his statement "700hp on a road track can make some heat and piston squirters do help keep temps down" I don't think there's too much emphasis being put on track use.
The early LS7's grenaded because the tank was too small which is why GM went to a larger capacity tank. The LS7 dry sump is far from perfect but it's still better than a wet sump for track use. LS engines have horrible windage problems combined with the fact the oil pumps go into duress above 6,200 rpm, this results in a oil pan full of a frothy aerated milkshake for oil when you run at high rpm on a track. With a dry sump at least you have a larger supply of oil and a higher column of oil above the pick-up that allows the air to separate from the oil and rise to the top, that's not going to happen with a wet sump pan.